Shoe-end-clamping mechanism



R. E. DUPLESSIS. SHOE END CLAMPING MEcHANl sM.

2 SHEETS-SHEET 1 FILED MAY HNI-lll- Vlll 'I Hill?` 2 SHEETS-SHEET 2 Jan. 9, W23.

R. E. DUPLESSIS SHOE END CLAMP a NG MECHAN l SM. FlLED MAY 7. 1920.

relativelj; to the wipers by the pressure ot the band, the invention, as a further eature, provides yieldable means tor preventing bodily movement ot the band except in response to a substantial degree oi torce applied. In accordance with a further desirable and novel characteristic oi' the construction shown the yieldable means normally resisting bodily movement ot the band is adjustable as to tension to-permit variation of the pressure applied at the end of the shoe in accordance with the varying requirements of different shoes.

It will be evident that in the construction shown, in which the band closing members are unyieldingly connected to the ends' ot the band, their movement lengthwise ot the shoe through which they are wedged inwardly also toward the sides is substantially less than in prior constructions having yieldingly swinging lever connections between the members and the band. ln view of this condition, and in order to avoid the necessity of an undesirably abrupt action ot' the wedging means in order to close the band properly, the invention further at" fords provision or adjust-ment ot' the unyielding connections between the closing members and the ends of the band to permit the band to be positioned in such relation to the opposite side faces of each size and style of shoe as to minimize the extent ot` closing` movement of the band required to clamp the work properly at the sides.

The above and other features ot the invention, including certain details of censtruction and combinations ot parts, will new be describedl with reference to the aceoinpanyinl;` drawings and pointed out in the claims.

ln the drawings:

Fig. l is a longitudinal vertical section ot the heel lasting' portion ot a machine ol the type illustrated in said prior patent with the novel features ot the present invention applied thereto7 andL Fig. 2 is a plan view oit the heel embracing` band and its operating connections.

ln common with prior machines ot the illustrative type, the machine herein. shown comprises a shoe support or jack 2 having a pin to engage in the socket oi.: an, inverted last ou which are mounted shoe .materials ready l'or lastinga the shoe support 2 being;i uio-nnted on a carrier flwhich is movable in guideways on a supporting` member (i to torce the heel end portion ot' the shoe length wise .into the heel clamping' band and to position the shoe in ope'ative relation to heel wipers 8. liloveinent oit the carrier t to jack the shoe into the band is eilected by manual means not shown in detail, but vincluding a pinion 10 engaging raclr teeth on the upper tace of the carrier. The slice support 2 isI mouted for vertical movement trannie in the carrier '-land rests at its lower ond upon a pivoted lever 12 provided with a wedge face engaging a screw 14. whereby the support is moved upwardly during its rearward movement with .the carrier l to position the heel seat in the proper plane relatively to the wipers. It will be understood that at the end of its shoe jacking movement the carrier l is locked against retractive movement by suitable retaining means as illustrated, for example7 in said prior patent. p

The heel embracing or clamping band comprises a flexible member 16 which may be made of any suitable material, andftor the purposesr oi' the present invention preterably comprises a pad of comparatively yieldable material such as balata gum, and an outer enclosing or backing member 18 which7 as shown, may comprise a chain with a series ot links extending round the end oit the shoe from one side portion to the other. For closing the opposite end portions ot the band inwardly against the sides ot the heel end oll the shoe the machine herein shown, as in prior constiaictions, has a cam 2O which may be operated as heretoi'iore by power under the control or" a suitable clutch, this cam acting upon a roll 22 on lever 2e connected by means et a. bar 9 e to a pivotally mounted lever 28, the bar 2G comprising parts relatively movable to permit lateral adjustment of the heel lasting mechanism. At its rear end the lever engages the lower end of lever 30 which is connected by a comparatively heavy springA 32 to slidably mounted block 3ft. Extending' from the block Re is a .rod 36 on the front end ot which is pivotally mounted a closing bar 3S connected by links 4l() to 'forwardly extending' bars or slides 4:2 which servo as closing members 'tor the band, these slides being' `guided at their rear ends in slots 'toi-ined in a portion l-/I- et the heel lasting head. At their iront ends the niembers Zl2 are connected to the ends ofthe band chain i8 by arms 46 provided with slots i8 to receive pins 50 projecting upwardly 'from the members l2 rlhe pins 50 thus serve to hold the arms 4.6 rigidly against yielding; movement relatively to the members ft2 as these members are moved Ytor` wardly by their operating means. Further to detern'i'ine the position oi" the arms -li on the members ffl-21 the latter are provided. with rods 52 which. are suitably cured thereto and are tlirem'led.` to receive nuts 54; .having .flanges to engage in slots in .the arms .4r-6? whereby the arms may be adjusted laterally et the members l2 and I.

held in adjusted position.

As the closing` members l2 are moved lorwardly by the operating means described, they are swung inwardly about their rear ends toward the sides of the shoe to close llO :refiners n the ends of the bend against the shoe by the ix'edging action oit pins 58 engaging in curved slots in the closing members. it will thus be evident that in the operation ofthe bund closing means through the tension ot the comparatively heavy spring` 32 the ends of the bend are closed inwardly against the sides of the shoe by the vletterati movement ot the members 4t2 and that et the sume time, by reason of the unyielding connections between the ends ot lthe bund and the closingmembers, e. substantial forward pull is applied to the ends ot the band to drew it with increased pressure round the corners et the heel end trice ot the shoe where7 as is well-known, the shaping' of upper materiels' including en end stiii'ener or counter is particularly diihcult.

By adjustment ot the nuts 5d the bund closing ineens may be readily conditioned to epply7 on different sizes and styles ot shoes, the requisite degree ot pressure et the sides in proportion to thet applied round the end of the shoe (.fompuretively less pres sure, ot course, being;` required to shape the upper et the sides. Such. adjustment also minimizes the extent ot lengthwise moren nient ot the slides l2 rodi .d tor n "opcrly closing the band. lllhen the arms i6 have been adjusted in accordance with r,the requirements ot' any pnrticuler size and style of shoe, no further adjustment is required in operating upon different Vshoes oli' the same size und style. It will be understood that the yielding` cher-actor et the meteriffil ot which the inner shoeenguging portion 16 oit the bund is iormeihr particularly it materiel suchA es belote :ejuni `is used. is :ulepted to compensate for ny slight dition ences in the thickness of the upper materiels ot dii'ierent shoes withoutthe necessityy .igor :idiustment of the bend.

.lit its intermediate portion, et the e2;-k 7eine rear end of the shoe, the bund is sup J. L ported on e cross bur or yoke 62 udjustebly mounted and controlled by e hand wheel 6d to permit lateral adjustment of the bund in :i manner similar to the construction shown. und described in United States Letters Petent No. 15%()6247 grunted on lune l0, i919 upon .fin application ot b/lnlthius Brock.

purposes ci? this invention the supportif'olze is u. listed 'igor movementlenlthvus the corners of the end ot' the shoe by the forward pull ot' the closinginembers on the Vcorners ot the end of' the shoe. purpose" u rod i2 is slidsbly i'i'iounted in the heel lasting heed iront end to sblock 'T4 doveteiled in e tra-ns `i'iorwurd movement oi the bund r i e oi the shoe. the yoke being); guided by `,bend closing bers v along the opposite sides of the shoe end ends of the bund. ln order,` lioweyer.y to avoid u disproportionute degree ot pressure egeinst the extreme end trice ot the shoe by the forward pull on the ends of the bend sind by such tendency es the members huye to torce the yoke member lorwerdly through their pressure on the pins 58 which ure mounted yon the yole membery the me.- chine is further provided wit 'i yielding means tol preventv oriif'zird movement olf the yoke member except in response to e substanthe bund acting to tightenit against the For this und is connected et its Verse slidewey in the yoke member 62 to permit the sdjustino novement oithis member laterally ot the shoe the rod having mount ed' thereon ,e spring' i6 whichA beers et one end on :i portion oit the heel lestingfheed ytiel degree of force applied to the ends oi' and et its opposite end upon e coller 753 lVith this corristruction l .f whole con take piece only against the resistance of the sp Z5/.the riorce ofthe latter being such ns to avoid disproportionate or unde`- siruble torwa rd pressure oit the bend against the extreme end foce et the shoe.

secured on the rod.y

in different adjusted positions on the rod 72 The col- `lar 78 may be fixed by ineens ot e screw 8O to very es desired-the pressure oi? the spring 76 in accordance with the requirements ot tie churecter otv the work noon `which the Il d machine isto operate.

Since the purpose und the menner of operation oit the different parts und the sequence of the different operations lutz/e been "tully set forth. in the foregoing' description,

no further description ot the operation ot the machine `is necessnry tor en understanding' oi the invention.

Having* described the invention, what cleim es new und. desire to secure by Letters Potent oit the United @tutes is:

1. ln mechanism oit the class described the combination with shoe positioningmeans,

ot e bundftor embracing` on end et the shoe.,4

band closing'members noreble lengthwise ot the shoe at its opposite sides to close the bund about the end ol: the shoe seid 'meinbers being so connected to the bund :is to prevent reist-ire movement lengthwise of the shoe between them und the bund in the closing` oit the blind. und menus operativo in response to the movement oit smid members `lengthwise ot the shoe to` :torce theminwerdly toward the sidesof the shoe.

Q. ln mechanism ot the class combinetionwith shoe positionino n'ieens. ot bond tor embracing' :in end ot the shoe,

movable lengthwise to close the bendebout described, the

ndingr lengthwisey LUX the end ot the shoe, connections between smid bers :ind the end portions ot the band constructed to pr vent relative movement between the bers and the end portions o'j the bend beth lengthwise end laterally of the shoe in the closing` of the band about the shoe, and ineens operative in response to the lengthwise movement of seid bars to torce them inwznfdly toward the sides of the shoe. i

3. ln mechanism of the class described, the combination with a shoe support, ot zr bend 'for embracing-i; en end of the shoe, band closing` members mounted for operative movement lengthwise of the shoe end connected respectively tothe opposite ends of the bond, and mechanism arranged to ect in response to seid movement ot theclosing members end independenlj,T ot the resistance of the shoe to move seid members inter-ally or" the shoe and force the bend against the sides of the shoe, the Conner-,tions between said members and the ends ot the bend being); constructed to prevent relative movement between the members and the bend lengthwise of the shoe to canse seid memment lengthwise of the shoe, wedge mecheif nisin arranged to act in response to sta-id movement ot the closing` members to import to said members n proportiomil movement toward the sides ojf the shoe, :ind oonneiftions between seid members und the endsoit the bond constructed to prevent rtf i ment lengthwise ot the shoe between the members und the bend in the closing; oit the bend.

lin mechanism oit the chiss des@ rombinzition with shoe support, f .tor emlfrncing in end oi'f the shoe, bund closing` members mounted 'ior operative movement lengthwise ot the shoe, weegge meehenism arranged to ect in response to seid movement of the elesin members to swing them about their reni' en( s toward the sides et the shoe, ond eonneelions between the 'iront ends of said mend s :ind the ends of he bond eonstrorted ifo prevent relntive yield between the members ond the bend in the clofng of the bri-nd.

3. ln mechanism et the c ese described, the combination with e` shoe support, of a bend tor embracing an end el the shoe, bend closslides mounted for opere-tive movement lengthwise ot the shoe, wedge mechanism res shoe, and connecting' members extending :illv

oonsive to seid movement of the slides to force them inwardly toward the sides of the y members being rigid with the slides against the bend closing` toi applied by the slides lengthwise ot the shoe.

'i'. ln mechanism oi" the elses described, the

combination with a, heel end emlnncinev bend of the shoe iter i 8. ln mechanism oit the class des-ribed, the, combination with a. shoe support, of n ir-nd tor embricing` an end ot the shoe, bond closing `m mbers mounted for operative moz' lei k 'b rise of the shoe, wedging for in'ipni eine; to seid members zi comineens ponent o? movement ieterellyo'f the shoe in proport n io their lengthwise movement,

oonneetions between seid members and the opposite ond portions of the bendeonstructed to prevent relative yield between the band und seid members both lengthwise und laiteroit the shoe, sind ineens -for effecting prenry adjustment laterally of the shoe the ojgosite end portions of the bend. l, in meehenisni of the (dess described, e combination with s, shoe support, oi e for en'dnocingi :in end oil the shoe, bend .osiiin members nioiinted vtor operative movement vlengthwise of .,he shoe,`wedgin,o; meri-ns Jfor n ntinn to siiid n'ienibers :i (fomponen t o?? movement hito .':rliy o1" the shoe in proportion to their lengthwise movement, :ind nnyielding connections between seid i, #i'iibers :ind the opposite end portions of the band constructed to permit relative edjnstment between the bend and said. members. v

l0. In mechanism of the class described, the combination with :i shoe support, ot a bond for embracing; en end ot the shoe, bond closingmemliers mounted 'tor operative movement lengthwise et the shoen n'ieehzrnism or e'lieeti .e n iiroooi'tiimnl movement `of said, members brim-:illy of the shoe in 'und pivoted to the ends oli the bini( igie- 1' the n: shoe sui gort, ot

band for embrecing en end o" band closing'fmembers `opeintirely movable lengthwise of the shoe, wedifi dmesns sponsive to seid movemet i u members to force them inn Ltroy toward the sides of the shoey connections 1'etween seid members andthe opposite the band constructed to prevent relativ i the `shoe moved bodily lengthwise oil force oi said closing members l 13. ln mechanism o't the class described. the combination with n shoe sn iort ot bend for embracing" en end ot the shoe?` blind closingmembers connected unyieldingrly to the opposite end portions ot seid i1-ond and mounted for operative movement lengthwise of the shoe with e component oli' movement laterally ot` the shoe in proportion to their lengthwise movement, seid bond being mounted for bodily movement lengthwise ot the shoe in response to the force opplieil by seid members.r and yieldable means Jor preventing such bodily movement of the bend until eJ determinate degree of seid force exceeded to prevent undue pressure of the band against the extreme end of the shoe` 1411. lin mechanism or the class descril'xed. tbe combination with shoesupport, oi u. bund 'For iunbrni'ingf :in ond ot the show closing; lneniliiers ii'iov'oble lengthwise oi" the shoe with :i component ol umvonieut lut-erully 'or the shoe in proportionk to their lenl't-hwisc movement to drow the bund round the end end close it against the sides oi' the shoe'a connections between seid mem,- bers and the ends or the band constructed to prevent relative movement between seid members and the band lengthwise yor the shoe in the closing); ot the bend, and yielding ineens connected to the intermediate portion of the bend to permit seid intermediate portion to move lengthwise oii the shoe only when e determinate 'force epplied et the ends of the bend is exceeded.

15'. ln mechanism of the class described, the combination with e` 'shoe supportyoiE n band for embracing' the heel end of the shoe bund closing members operatively movable lengthwise ot the shoe5 wedging means reai lla nibers let port i ons oli end the ,sie

movement ot the closingY them inw rdly toward t sponsive to seid members to force sides or' the shoe`,'connections bet veen sind members end the opposite endportions ol o'l1 seid membersJunfieldine'l to the bond in porting; r" "ns ttor the intermediste lportion of the bund -ineludine' f spring; yieldeble to permity bodily movement koi the bend lengthwise ot the shoe in response to the forceA of seid closing; members. n

i6. ln mech ism oi thecless describedn the combinationwith e heel end hinein@` bend sind :i shoe support movable to torce the heel end or o shoe into seid biimh ot bendclosino' .ineens unyieldirmy connected tothe e e ends olsziid blind to torce it inwere n LL of the bend and Amounted 'for operative movement lengthwise of the shoe7 a support i'or the intermediate portion of the bend also mounted for movement lengthwise of the shoev wedging ineens acting between seid support and closing,` members to force seid .members inward laterally oi' the shoe in response to their movement lengthwise of the sh0e end spring` ineens arranged to permit movement of said support und bend lengthwise of the shoe only in response to e determinate desiree of lorce oi solid `closingmembers fill. 'lu mechanism oit the i-luss described, the combinetion with :if shoe support oi :l bend 'For e f:bi-:icinol :in end olf the slioe,r bund closing' .ineens unyieldingly connected to the opposite ends oit the bend to drew the bend firmly round the corners of the end of the shoe by force directed lengthwise ot the shoe seid bend being` mounted for bodily movement .lengthwise ot the shoeq and spring ineens for preventing such bodily movement of the band except in response to e determinate degree of Jforce applied to the ends or" the bend7 seid spring means being adjustable es to tension to very proportion# etely the relative pressuresk applied on the extreme end and on the corners of the end oit the shoe.

i9. ln nieclizmism of the class described, thecombinstion witho shoe support of :i bond ior embracing an end oi the shoe, band in lengthwise or the shoe, und sup-v umieinst tl'iesides o ythe shoe end' sie closingI means movable lengthwise of the shoe to draw the band round the end oi the shoe, Connections for transmitting the force of said losV in' means nnyielding'ly to the band in a direction lengthwise oi' tie shoe, and spring means connected to the intermediate portion of the band to pemit said intermediate portion to move lengthwise'ot the shoe only in response to a predetermined "foi-ee applied at the ends ot the band, said spi-ing; me to vary th dea i'ee ot torce seqniiied to ea1 se bodily movement of the band lengthwise of the shoe. ln the ooi? band toi' embracing* sin end oit the shoe Clos-v ing` members mounted toi' movement iengthwise of the shoe with a component of movement laterally of the shoe and unyieldingly connected to the ends oi the band to draw the band sound the end of the shoe and force it against the sides of the shoe, a support ioi' the intermediate portion o;c the band mounted ioimovement lengthwise oi? the shoej a spiking normally acting' to i'esist said movement oi" the support, and means iioi' adn justine the tension of said spi-inn'.

2l. In mechanism of the class deseiibeih the Combination with shoe positioningl ns being` adjustable as to tension' means, of a band for embracing an end of the shoe, closing bars movable lengthwise oit the shoe at the opgosite sides ot' the shoe, wenig-ing` means automatieallj)7 opeative .in the movement oi' said bai-s lengthwise ot the shoe to t'oi'ee them inwadly toward the sides of the shoe, and arms extending transversely oi1 said bars and eonneoted to the ends oi' the band, said arms being` rigid with the bais' against the band closing' force applied by the bars iengthwise oi' the'shoe.

22. In mechanism of the eiass described, the ooinbin ation with shoe positioning means, ot' a band for embiaeing an end of the shoe, closing bars movableienbhwise of the shoe at the opposite sides oi the shoe, means automatically operative in the movement ot said bai's lengthwise oit the shoe 'to force. them inwardly toward the sides of the shoe, arms extending; transversel;7 of said bars and oonneeted to the ends of the bandr` said arms being rigid with the bai's against the band closing iioi'ee applied by the bais both lengthwise and iateiallyot the shoe, and connections permitting adjustment of said ai'ms relatively to the bars in directions laterally of the shoe. f

'in testimonywhereof l have signed my name to this speeiiication.

REN E. DUPLESFS. 

